Refractometer Excellence R4 - Overview - METTLER TOLEDO

Refractometer Excellence R4

Accurate, Intuitive, and Modular. The all-rounder for daily routines: The Excellence R4 refractometer offers fast refractive index measurements in the range from 1.32 to 1.70, with automatic temperature control from 0 to 100°C.

Simple One Click™ Operation

The One Click™ user interface enables users to start a complete workflow with one click including sampling, measuring, rinsing, drying, and SOPs.

User Management

The user management system allows for different level of access to be defined, with each user having their own personalized home screen and language.

Result limits

Measurement limits can be set for color-coded pass/fail information for accepted and rejected samples.

Specifications - Refractometer Excellence R4
Measurement Range nD 1.3200 – 1.7000
Accuracy nD (±) 0.0001
Repeatability nD (±) 0.00005
Brix measurement range 0-100 % w/w
Accuracy Brix 0.05 % w/w
Temperature control range 5 °C – 100 °C
Temperature control accuracy (±) 0.1 °C
Measurement scales Refractive Index, Sugar (Brix and more), Acid/Base, Chemical, Freezing Point, Salt, Others; Up to 30 user-defined concentration tables (can be entered as tables or formulas).
Color-coded result identification Yes
User Management Yes
On-screen help texts Yes
Barcode reader connectivity Yes
Minimum Sample Volume 0.5 mL
Password protection Yes
Languages English, Chinese, German, Spanish, French, Italian, Portuguese, Russian, Polish
Display / User interface 7" display with color touchscreen
Connectivity )
PC Software (Optional) LabX Express and Server
Dimensions (Width x Height x Depth) 226 x 193 x 208 mm
Weight 4.8 kg
Standard Compliance
Dimensions (DxHxW) 226 mm x 193 mm x 208 mm
Material Number(s) 30474903

Automatic Temperature Control

The integrated Peltier temperature control quickly heats up or cools down the measurement cell, maintaining the sample reliably at the desired temperature.

Status Light

The status light of the instrument shows if it is ready for a measurement (green), busy (blinking), or waiting for operator action (orange).

Automated Sampling, Rinsing and Drying

Automating workflows saves time, reduces costs and improves safety. The R4 is compatible with a large portfolio of autosamplers including solutions for single or multiple samples, and samples which are solid at room temperature.

Upgradable System

The Excellence R4 can be upgraded to a dedicated automatic multi-parameter system combining density, refractive index, pH, color, titration and more to save time, increase data quality and prevent any alteration of samples between individual analyses.


Automated Density Measurement

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Refractometer Excellence R4
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